Tap Code Cipher

Send letters as row-and-column tap groups using the classic 5x5 tap code square.

Tap code square

Tap Code uses a 5×5 square. Each letter becomes row taps followed by column taps, with C/K sharing one cell.

Type: Tap encoding Grid: 5 × 5 Shared cell: C/K = 1,3 Formats: Dots or digits

A_1,1

B_1,2

C / K_1,3

D_1,4

E_1,5

F_2,1

G_2,2

H_2,3

I_2,4

J_2,5

L_3,1

M_3,2

N_3,3

O_3,4

P_3,5

Q_4,1

R_4,2

S_4,3

T_4,4

U_4,5

V_5,1

W_5,2

X_5,3

Y_5,4

Z_5,5

Example: T = 4,4 becomes .... .... or 44.

Options

Preserve word breaks using //

Encrypt as compact digit pairs instead of dotted taps

When decrypting 1,3 show the shared C/K cell

Decryption accepts dotted taps like .... .... and digit pairs like 44.

Tap playback

Playback speed

Status: Ready Current: —

Audio is optional and only starts after you click. The highlighted square shows the current letter while the taps are playing.

Output stats

Mode: Encrypt Input letters: 0 Tap groups: 0 Output chars: 0 Word breaks: 0

Tap Code is best read as row then column. This tool keeps the historical C/K merge and can decode either dotted taps or compact digit pairs back into letters.

Input

Output

Using This Tool: Guide & Notes Show guide

Tap Code represents each letter as two tap counts: one for the row and one for the column.

How to use it

Choose Encode to convert text to taps, or Decode to convert tap groups back to text.
Paste the message or tap sequence into the input box.
Check the square to confirm the row and column for each letter.
Use clear separators between tap groups when decoding.

Options and settings

Tap symbols control how each tap is written in the output.
Group separators make rows, columns, letters, and words distinguishable.
Square settings decide how letters fit into the 5x5 grid.
Formatting choices affect readability more than the underlying mapping.

Notes

Traditional Tap Code often combines C and K.
Decoding fails quickly if row and column groups are not separated clearly.

Tap Code Cipher guide coming soon

The matching article is not published yet. This tool is ready now, and the guide can be added through the shared article template when it is written.

Guide coming soon

Signal acquired

A note from the team

We build these tools because we love cryptography, encoding, and making difficult ideas easier to explore. If they've helped you, even a small coffee means the world to the project. Thank you!

Say thanks on Ko-fi